Home / 87,626.20-131,439.30-72,851.80

Finding the Fourth Proportional to 87,626.20, 131,439.30 and 72,851.80

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Solution

The fourth proportional to 87,626.20, 131,439.30 and 72,851.80 is: 109,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,626.20 : 131,439.30 = 72,851.80 : x
  2. Step 2: Convert to fraction form
    87,626.20/131,439.30 = 72,851.80/x
  3. Step 3: Cross multiply
    87,626.20x = 131,439.30 × 72,851.80
  4. Step 4: Simplify right side
    87,626.20x = 9,575,589,595.74
  5. Step 5: Solve for x
    x = 9,575,589,595.74/87,626.20
  6. Step 6: Final answer
    x = 109,277.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.